Fuel-pump for internal-combustion engines.



PATENTED JUNE 16, 1908.

R, FLEMING. ARC LAMP.

APPLICATION FILED MAY 18, 1904.

Witnesses:

Inventor: Richa d We? b %r M y JTtt'y.

RICHARD FLEMING, OF LYNN, MASSACHUSETTS, ASSIGNOR TO COMPANY, A CORPOR- GENEBAL ELECTRIC ATION OF NEW YORK.

ARC-LAMP.

Specification of Letters Patent.

Patented June 16, 1998.

Application filed May 18, 1904. Serial No. 208,495.

To all whom it may concern:

Be it known that I, RICHARD FLEMING, a citizen of the United States, residing at Lynn, county of Essex, State of Massachusetts, have invented certain new and useful Imrovements in Arc-Lamps, of which the folowing is a specification.

My present invention relates to are lam s, more particularly. of the type in which t e electrodes employed are suc as to insure a flaming or luminous are.

The invention consists in certain features of construction and operation of the feeding mechanism of the lamp and in the means emtica solenoid coils 8, somewhat coils.

,are and for ventilating drawings and descri my inven tion..

a portion of the combined lamp orm coils 4, are secured to '40 -of the dash-pot being secured I The dash-pot 11 is arranged to-pre of the fumes from the the lam mechanism. The features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of my invention, however, reference may be had to the accompanying. ption in which I have ed one embodiment of ployed for disposing illustrated and descri Of the drawings, Figure 1 is a sectional elevation of an arc lamp embodying my invention; Fig. 2 is a perspective VIGW'ShOW'lII casing an clumney; and Fig. 3 is a diagram illustrating the circuit arrangement of t 1e lamp.

-Referring to the drawings, 1 represents a hood ortop of the usual form. A hollow post 2 extends downward from the center of the hood 1 to which it is rigidly secured in any suitable manner. The lower end of the st 2 supports a disk shaped horizontal lat- A pair of vertical solenoid siunt' the post 2 between its ends. A rod 6 carried by the movable armature cooperating with the shunt coils 4 passes through-an'aperture formed for the purose in tie platform 3. A pair of veronger than the coils 4, are also secured to the post 2 between its ends at the side of the post 2 opposite to that upon which the shunt secured. A rod 10 extending through the platform 3 has its upper end secured to the movable armature 9 cooperating'with the One member of a dash- 0t 11 issecured to the armature 9, the ot er mem er to the pi a form 3.

coils 4 are vent a rapid upward movement of the armature 9 when the coils 8 are energized.

An annular member 13 having aradially extending portion 14 and a cylindrical portion 15 is carried below the platform 3 by posts 16. The radial portion 14 is parallel to the platform 3. Abent arm 17 secured to the under side of theradial portion 14 has a socket 18 formed in its lower end in which the lower electrode 19- of the lamp is held in line with the axis of the hollow post 2. The lower electrode ofthe lamp is referably the negative electrode'when the amp is to be operated with direct'current and contains or is formed of some material which yieldsa flaming or luminous arc, such for instance as the mag'netic'oxid of iron or. the like. he utpper electrode 20 of the lamp, which rial from that of which the electrode 19 is com osed, slides within the hollow post 2 and as its lower end cylindrical portion 15. t

The lower'cnd of the rod 10 has secured to it an arm 21 which extends at right angles to the rod. Thisa'rm 21 has formed in it an elongated slot or passage through which the electrode 20 passes. to the arm 21 at the oint 23. The member 22 is also formed wit an elongated slot in it through which'the electrode 20 passes. The openings iiithe arm 21 and member 22 are so prolportioned and arranged that in the norma operation of the lamp the electrode 20is 'dly held between the right hand end wall the slot in the member 21 and the left hand end wall of the slot in the member 22. The extreme right hand end of the member 22, is bifurcated to slidingly receive the lower end of the rod 6. in the form of of holes 25 in the lower end of the rod; 6 serves as a means for raising the ri lit hand end of the member 22 to release the upper electrode at a suitable stage in the operation of the lamp.

A casin 26 having its upper end secured in an suitable manner to the hood 1 surroun s the lamp mechanism. com rises an inner cylindrical member 27 whic closely embraces the platform 3 and which extends from a dial portion of the A member 22 is pivoted point adjacent the ra member 14 to a point near}: "the upper end of the casing, and an outer cy- L may be ormed of the same or different 'mate A projection 24 which maybe a pin inserted in one of a series The casing.

' hers 27 and 28: the ends of the pipe sections lindrical member 28 which may belconcenthe upper end of the casing to apoint about pipe 33 which extend throug .means of screws 37. -The. member 36 suptric with the member 27 and which is separated therefrom. by an' annular space or. chamber 29 which extends from a point near midway between the platform 3 and the radial portion.14 of the member 13. Ap'ertures 30 are formed in the portion of',the member 27 immediately below-the platform 3.. Apertures 31 are formed in" the member I 28 near its upper end. Passages 32 extend through'the casin'g 26. These passages maybe formed b sections of apertures ormed in line with each other in the mem- 33 may be upset. or turned outwardly as shown to lock-the pipe-sections in place and to make ti ht joints'between the pi sections and't e members 27 and 28,. hood or water yard 34 is carried'by the member- 28in such inanneras to prev'ent'the passa'e of moisture or dust into the'interiorof tfie member 27. g

An annular hood 35 the member 28 near its lower end Eu ports an annular member 36 in any-suitab a manner as by ports in turn 'a transparent or translucent .globe 38 which surrounds the lowerportion of the lamp mechanism and protects or incloses the arc.

Referring to Fi 3 of the drawings, 40 and 41 represent con uctors which su ply current to the lamp terminals. A. con uctor 42 leads from the conductor 40 .to one terminal of the series coils 8. The other terminal of the seriescoils 8 is connected to the upper electrode 20 of the lamp by aconductor 43. A conductor 44 connects the line 41 to one terminal of the resistance coil 45 (not shown in the other figures of the drawings). The other terminal of the resistance coil 45 is connected to the lower electrode of the lamp by a conductor 46. A conductor 47 connects the conductor 46 with one terminal of the shunt coils 4. The other terminal of the shunt coils 4 is connected to the conductor 43..

Assuming the position of the electrodes of the lamp to be that shown in Fig. 1, in which it is seen they are separated by a short distance, upon connecting) the lamp in circuit the shunt coils 4 will e energized and the armature 5 will raise the rod 6. The engagement of the member 22 by. the projection 24 and consequent upward movement 'of the member 22 will release the electrode 20 which will thereupon drop .into contact-with the electrode '19. --Upon contact between the electrodes current will begin to flow betweenl them. This will energize the series coils and will at the same time so decrease the voltage on the shunt coils that they.will be practically deenergized-and the armature 5'will drop.. When the series coils 8 are energized I the armature 9 and rod 10 will be raised. As the deenergiz'ation bf the shunt coils occurs simultaneously with the energization of the series coils; and as a re id movement of the armature 19 is prevente by the dash wot 11,.

the electrode 20 will be immediately c am ed between the members 21 and 22 and wi be raised -by 'the upward movement of the armature 9 to draw an arc of the proper length between the electrodes 19 and 20.

When by'reason of the consumption of the electrodes, or fro'mothercauses, the voltage of the arcincreases sufli'cicntly beyond its 01" al value the'shunt coils 5 will cause a fee from time to time of the upper electrode means of .thelengagement etween the ro ection 24 and the member 22. When the amp is thrown out of circuit the coils 4 and 8 will, of course, become entirely dc J-nergize'd and the armatures will both descend to their original position. Inasmuch; however, asthe electrodes when running long enough to .become hot will necessarily be consumed somewhat, the downward movement of the armature 9 will; not be great enough to allow the lower end of the electrodes 20 to engage the end. of the electrode 19, and the electrodes will therefore'be separated as shown in Fig; 1. This is an important feature, as when the electrodes are allowed to come to ether while hot t ey are apt to stick or we d together. The gases or 'va ors produced by the artmixed with fsuitab e amounts of air which may enter the interior of the globe between its upper end and-the member 36 will pass thro h the a rtures 3O into the space 29 and g .out 0 the chamber through the apertu're s- 31, 318 indicated by) the small arrows in Fig, 1 j The distance tures 30'Jand31 and the dimensions of the space or chamber 29 are such as, to insure a natural'draft amplefor the purptpse. The platform '3forms a artition whic prevents anyof the are pro acts from enterin the chamber ,above the platform in whic the lam mechanism is located.

ore'or less solid material is condensed upon the inner w sof the chamber 29 from the vapor passing into the chamber through the aperture 30. This may be removed from time'to time'by jarring the casing or in any other suitable manner To facilitate the re moval Of-the condensed-material the casing maybe removed the',;lamp if desired, though 'th-is is not usuallynecessary. The air for cooling thecoils"and other mac-ban ism. locatedFwithin-the. casmg member 27 them-swin s,-

.Changes may b'e'made in the form and pro-- in'throhg'h the passages 32.? nd out rtionjofthe art's'comprising the construe iiim "-without departing from the etween the aperspirit of my invention, and I do not intend t e claims hereinafter made to be limited to the construction shown more than is made necessary by the state of the art. What I claim as new and desire to secure by Letters Patent of the United States, is, 1. In an arc lamp, a movable electrode and vmechanism for moving it, a casing surrounds ing-said mechanism, a second casing sur-- rounding the firstbut separated therefrom by a space through which the are products can pass, and a member connecting said casings, said member being formed with a pas sage through it by means of which-the yentilation of the mechanism is secured-l, w

2 In an arc lamp, a movable electrode-and. mechanism for moving it, a casing inclosing said mechanism, a second casing surrounding the first but separated therefrom to form a space through which the are I roducts can pass from the lamp, both of sai casings hav- Jng apertures formed in'them,- and a conduit connecting said apertures.

3; In an arc lamp, the combination with a horizontal partition, of a double-walled ver tical annular casing throu h which the vapors are drawn by natural aft and in which they condense before their escape from the lamp, suitable o enings being provided for the ventilation of the interior of the lamp and the cooling of the inner wall .of the annular casing. g

4. In combinationm' an arc-lamp with a horizontal partition above the EIOyfl. doublewalled annular casing through which the vapors generated are forced to pass before escaping from the lamp, perforations in the lower and upper arts of said casing for said vapors, and tubu ar lateral assages through the wall of thecasing to a mit fresh .In witness whereof, I have hereunto 'set my hand this 16th day of May, 1904. I

Y RICHARD FLEMING. Witnesses:

DUGALD McKI-MoKgLLoP, JOHN. A. MCMANUS. 

